Home / 22,989.20-31,723.80-12,916.88

Finding the Fourth Proportional to 22,989.20, 31,723.80 and 12,916.88

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Solution

The fourth proportional to 22,989.20, 31,723.80 and 12,916.88 is: 17,824.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,989.20 : 31,723.80 = 12,916.88 : x
  2. Step 2: Convert to fraction form
    22,989.20/31,723.80 = 12,916.88/x
  3. Step 3: Cross multiply
    22,989.20x = 31,723.80 × 12,916.88
  4. Step 4: Simplify right side
    22,989.20x = 409,772,517.74
  5. Step 5: Solve for x
    x = 409,772,517.74/22,989.20
  6. Step 6: Final answer
    x = 17,824.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.